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WGU Hesi Med Surg
Total Questions : 53
Showing 10 questions, Sign in for morePenicillin G procaine 240,000 units intramuscularly is prescribed for a 4-year-old child who has a streptococcal respiratory infection. The medication vial is labeled 1,200,000 units/2 mL. How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Explanation
To find the answer, we can use the following formula:
(mL to be administered) = (units prescribed) / (units per mL)
Substituting the given values, we get:
(mL to be administered) = (240,000) / (1,200,000 / 2)
Simplifying, we get:
(mL to be administered) = (240,000 x 2) / (1,200,000)
(mL to be administered) = 480,000 / 1,200,000
(mL to be administered) = 0.4
Therefore, the nurse should administer 0.4 mL of penicillin G procaine to the child.
A 4-year-old is admitted with croup and receives a prescription for a single dose of dexamethasone 0.6 mg/kg IM. The child weighs 35 pounds. How many mg should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Explanation
To find the answer, we can use the following steps:
- Convert the child's weight from pounds to kilograms by dividing by 2.2
- Multiply the weight in kilograms by the dosage in mg/kg
- Round the result to the nearest whole number
Using these steps, we get:
- (weight in kg) = (35) / (2.2) = 15.909
- (dose in mg) = (0.6) x (15.909) = 9.545
- (rounded dose in mg) = 10
Therefore, the nurse should administer 10 mg of dexamethasone to the child.
A patient is receiving a secondary infusion of vancomycin 1,500 mg in 250 mL to be infused over two hours. The IV administration set delivers 10 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Explanation
To find the answer, we can use the following formula:
(gtt/min) = (mL/hour) x (gtt/mL) / 60
Substituting the given values, we get:
(gtt/min) = (250 / 2) x (10) / 60
Simplifying, we get:
(gtt/min) = 125 x 10 / 60
(gtt/min) = 1250 / 60
(gtt/min) = 20.833
(rounded gtt/min) = 21
Therefore, the nurse should regulate the infusion at 21 gtt/min.
A patient receives a prescription for warfarin 2 mg IM daily. The pharmacy delivers a vial labeled, warfarin 5 mg/single-use vial. The instructions read, reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL. How many mL should the nurse administer? (Enter the numerical value only.)
Explanation
First, we need to find out how many mg of warfarin are in one vial. Since the vial is labeled 5 mg/single-use, we can assume that it contains 5 mg of warfarin.
Next, we need to find out how many mL of solution are in one vial. Since the instructions say to reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL, we can use the following formula:
Amount of solution= amount of water + amount of warfarin
Substituting the given values, we get:
Amount of solution = 2.7 + 5 =7.7 mL
Now, we need to find out how many mL of solution contain 2 mg of warfarin, which is the prescribed dose for the patient. We can use the following formula:
mL of solution = mg of warfarin/ concentration of warfarin
Substituting the given values, we get:
mL of solution = 2/2 = 1 mL
Therefore, the nurse should administer 1 mL of solution to the patient.
A patient is receiving a 200 mL bolus of 0.9% normal saline (NS) to be infused over 20 minutes. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.)
Explanation
The correct answer is 600 mL/hour. To find the answer, we can use the following formula:
(mL/hour) = (mL/minute) x 60
Substituting the given values, we get:
(mL/hour) = (200 / 20) x 60
Simplifying, we get:
(mL/hour) = 10 x 60
(mL/hour) = 600
Therefore, the nurse should set the infusion pump to deliver 600 mL/hour of 0.9% NS to the patient.
A patient receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)
Explanation
To find the answer, we can use the following steps:
- Convert the dosage of oxytocin from milliunits/min to units/hour by multiplying by 60
- Calculate the concentration of oxytocin in the IV bag by dividing the amount of oxytocin by the volume of solution
- Divide the dosage of oxytocin by the concentration of oxytocin in the IV bag to get the volume to be delivered
Using these steps, we get:
- (dosage of oxytocin in units/hour) = (2) x (60) = 120 milliunits/hour
- (concentration of oxytocin in IV bag) = (20) / (1000) = 0.02 units/mL
- (volume to be delivered in mL/hour) = (120 x 10^-3) / (0.02) = 6 mL/hour
Therefore, the nurse should program the infusion pump to deliver 6 mL/hour of oxytocin in lactated Ringer's to the patient.
A child is to receive vancomycin 40 mg/kg intravenously one hour before a scheduled procedure. The child weighs 44 pounds. How many mg of the medication should the nurse administer? (Enter numeric value only.)
Explanation
To find the answer, we can use the following steps:
- Convert the child's weight from pounds to kilograms by dividing by 2.2
- Multiply the weight in kilograms by the dosage in mg/kg
- Round the result to the nearest whole number
Using these steps, we get:
- (weight in kg) = (44) / (2.2) = 20
- (dose in mg) = (40) x (20) = 800
- (rounded dose in mg) = 800
Therefore, the nurse should administer 800 mg of vancomycin to the child.
A patient receives a prescription for hydrocortisone sodium succinate 150 mg intravenously STAT. The powdered medication needs to be reconstituted with 2 mL of bacteriostatic water that will provide a solution of 250 mg/mL. How many mL should the nurse administer? (Enter numerical value only.)
Explanation
To find the answer, we can use the following formula:
(mL to be administered) = (mg prescribed) / (mg per mL)
Substituting the given values, we get:
(mL to be administered) = (150) / (250)
Simplifying, we get:
(mL to be administered) = 0.6
Therefore, the nurse should administer 0.6 mL of hydrocortisone sodium succinate to the patient.
A patient is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. How many mL/hour should the nurse program the infusion pump? (Enter numerical value only.)
Explanation
To find the answer, we can use the following formula:
(mL/hour) = (mL/minute) x 60
Substituting the given values, we get:
(mL/hour) = (500 / 120) x 60
Simplifying, we get:
(mL/hour) = 4.167 x 60
(mL/hour) = 250
Therefore, the nurse should program the infusion pump to deliver 250 mL/hour of azithromycin in NS to the patient.
A patient who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, “Dopamine 400 mg in 5% Dextrose injection 250 mL.” How many mL/hour should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Explanation
To find the answer, we can use the following steps:
- Calculate the dosage of dopamine in mcg/hour by multiplying the weight in kg by the rate in mcg/kg/min and by 60
- Calculate the concentration of dopamine in the solution by dividing the amount of dopamine in mg by the volume of solution in mL and multiplying by 1000
- Divide the dosage of dopamine by the concentration of dopamine in the solution to get the volume to be delivered in mL/hour
- Round the result to the nearest tenth
Using these steps, we get:
- (dosage of dopamine in mcg/hour) = (91) x (3) x (60) = 16,380 mcg/hour
- (concentration of dopamine in solution) = (400 / 250) x (1000) = 1600 mcg/mL
- (volume to be delivered in mL/hour) = (16,380) / (1600) = 10.2375 mL/hour
- (rounded volume to be delivered in mL/hour) = 10.2 mL/hour
Therefore, the nurse should program the infusion pump to deliver 10.2 mL/hour of dopamine in 5% dextrose injection to the patient.
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